@struktoai/mirage-core/dist/core/history/render.js

A Unified Virtual Filesystem For AI Agents

// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
import { EVENT_COMMAND } from "../../observe/log_entry.js";
const HISTSIZE = 500;
/**
 * Render command events as a GNU bash histfile: one `#<epoch-seconds>`
 * timestamp comment line per entry followed by the command line.
 * Non-command events (ops, clear tombstones) are ignored.
 */
export function renderBashHistory(events) {
    const lines = [];
    for (const e of events) {
        if (e.type !== EVENT_COMMAND)
            continue;
        const ts = typeof e.timestamp === 'number' ? e.timestamp : 0;
        lines.push(`#${String(Math.floor(ts / 1000))}`);
        lines.push(typeof e.command === 'string' ? e.command : '');
    }
    return lines.join('\n') + (lines.length > 0 ? '\n' : '');
}
/**
 * Render command events as `history` command output: a numbered,
 * right-justified, two-space-separated listing.
 */
export function renderHistoryListing(events, n, histsize = HISTSIZE) {
    const commands = events.filter((e) => e.type === EVENT_COMMAND);
    const scoped = commands.slice(Math.max(0, commands.length - histsize));
    let entries;
    if (n === undefined || n < 0) {
        entries = scoped;
    }
    else if (n > 0) {
        // bash lists nothing for n=0; slice(-0) would list everything.
        entries = scoped.slice(Math.max(0, scoped.length - n));
    }
    else {
        entries = [];
    }
    const total = scoped.length;
    const width = String(total).length;
    const startIdx = total - entries.length + 1;
    const lines = entries.map((e, i) => `${String(startIdx + i).padStart(width)}  ${typeof e.command === 'string' ? e.command : ''}`);
    return lines.join('\n') + (lines.length > 0 ? '\n' : '');
}
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